.page-about {
  --about-col: 208px;
  --about-maxw: 64ch;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 18px 0 52px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(47, 240, 200, 0.08), transparent 62%),
    linear-gradient(180deg, var(--ink-cabin) 0%, var(--ink) 84%);
  border-bottom: 1px solid var(--rail-line);
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero__crumb {
  margin-bottom: 26px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-hero__tag {
  margin: 0 0 14px;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 8.2vw, 58px);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: var(--about-maxw);
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__stat {
  padding-left: 12px;
  border-left: 1px solid var(--rail-line);
}

.page-about .about-hero__stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 5vw, 26px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--orange);
}

.page-about .about-hero__stat span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-about .about-hero__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-cabin);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) brightness(0.86);
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 24px 0 72px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.9fr);
    align-items: end;
    gap: 48px;
  }
  .page-about .about-hero__media {
    aspect-ratio: 4 / 3;
  }
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 64px;
}

.page-about .about-canvas {
  min-width: 0;
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: var(--about-col) minmax(0, 1fr);
    gap: 56px;
    padding-top: 84px;
    padding-bottom: 92px;
  }
}

/* ---------- 侧栏目录 ---------- */
.page-about .about-index {
  padding: 16px 14px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-md);
  background: var(--ink-cabin);
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) transparent;
}

.page-about .about-index__item {
  flex: 0 0 auto;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--slate);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-index__link:hover .about-index__num,
.page-about .about-index__link:focus-visible .about-index__num {
  color: var(--ink);
}

@media (min-width: 960px) {
  .page-about .about-index {
    position: sticky;
    top: 26px;
    align-self: start;
    padding: 0 0 0 18px;
    border: 0;
    border-left: 1px solid var(--rail-line);
    border-radius: 0;
    background: transparent;
  }
  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }
  .page-about .about-index__item {
    flex: none;
  }
  .page-about .about-index__link {
    width: 100%;
    padding: 8px 10px 8px 0;
    border: 0;
    border-radius: 0;
    white-space: normal;
  }
  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    background: transparent;
    color: var(--cyan);
  }
  .page-about .about-index__link:hover .about-index__num,
  .page-about .about-index__link:focus-visible .about-index__num {
    color: var(--orange);
  }
}

/* ---------- 章节 ---------- */
.page-about .about-sect + .about-sect {
  margin-top: 58px;
  padding-top: 58px;
  border-top: 1px solid var(--rail-line);
}

@media (min-width: 900px) {
  .page-about .about-sect + .about-sect {
    margin-top: 96px;
    padding-top: 96px;
  }
}

.page-about .about-sect__head {
  padding-left: 16px;
  border-left: 1px solid var(--rail-line);
}

.page-about .about-sect__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-sect h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 5.2vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-sect p {
  margin: 22px 0 0;
  max-width: var(--about-maxw);
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-sect p + p {
  margin-top: 14px;
}

.page-about .about-sect strong {
  color: var(--paper);
  font-weight: 700;
}

.page-about .hl {
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--orange);
}

.page-about .about-sect a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 200, 0.4);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-sect a:hover,
.page-about .about-sect a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-about .about-sect__aside {
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

/* ---------- 赛季刻度 ---------- */
.page-about .about-seasons {
  display: flex;
  gap: 7px;
  margin: 30px 0 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan-deep) transparent;
}

.page-about .about-seasons__item {
  flex: 0 0 auto;
  padding: 5px 12px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--slate);
  white-space: nowrap;
}

.page-about .about-seasons__item--now {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

/* ---------- 团队三列 ---------- */
.page-about .about-crew {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}

.page-about .about-crew__item {
  padding: 4px 0 4px 16px;
  border-left: 1px solid var(--rail-line);
}

.page-about .about-crew__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-about .about-crew__out {
  margin: 8px 0 0;
  max-width: none;
  font-size: 14.8px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-crew__note {
  margin-top: 26px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--ink-cabin);
  font-size: 15px !important;
  color: var(--mist);
}

@media (min-width: 820px) {
  .page-about .about-crew {
    grid-template-columns: 1.2fr 1fr 0.86fr;
    gap: 0;
    border-top: 1px solid var(--rail-line);
    padding-top: 22px;
  }
  .page-about .about-crew__item {
    padding-right: 20px;
  }
  .page-about .about-crew__item + .about-crew__item {
    padding-left: 22px;
    border-left: 1px solid var(--rail-line);
  }
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-cabin);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.85);
}

.page-about .about-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  border-top: 1px solid var(--rail-line);
}

@media (min-width: 760px) {
  .page-about .about-figure--side {
    max-width: 560px;
  }
}

/* ---------- 三道流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 22px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__node {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-pill);
  background: var(--ink-cabin);
  cursor: default;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-flow__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 240, 200, 0.13);
  flex: none;
}

.page-about .about-flow__label {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-flow__bubble {
  margin: 10px 0 0;
  max-width: none;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
  padding-left: 16px;
  border-left: 1px solid var(--rail-line);
}

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    position: relative;
  }
  .page-about .about-flow::before {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    top: 21px;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), var(--orange));
    opacity: 0.45;
    z-index: 0;
  }
  .page-about .about-flow__item {
    position: relative;
    z-index: 1;
  }
  .page-about .about-flow__node {
    background: var(--ink);
  }
  .page-about .about-flow__node:hover,
  .page-about .about-flow__node:focus-visible {
    border-color: var(--cyan);
    transform: translateY(-2px);
  }
  .page-about .about-flow__bubble {
    position: absolute;
    left: 0;
    top: calc(100% + 12px);
    width: 100%;
    margin: 0;
    padding: 12px 14px;
    border: 1px solid var(--rail-line);
    border-left: 2px solid var(--cyan);
    border-radius: var(--radius-sm);
    background: var(--ink-cabin);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
  }
  .page-about .about-flow__item:hover .about-flow__bubble,
  .page-about .about-flow__item:focus-within .about-flow__bubble {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ---------- 规则清单 ---------- */
.page-about .about-rules {
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--rail-line);
}

.page-about .about-rules__row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rail-line);
}

.page-about .about-rules dt {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-rules dd {
  margin: 0;
  max-width: var(--about-maxw);
  font-size: 15.4px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 720px) {
  .page-about .about-rules__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
  .page-about .about-rules dt {
    padding-top: 2px;
  }
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background:
    radial-gradient(90% 120% at 10% 0%, rgba(255, 138, 61, 0.1), transparent 60%),
    var(--ink-cabin);
  border-top: 1px solid var(--rail-line);
  padding: 56px 0 64px;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-cta h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 36px);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .about-cta {
    padding: 76px 0 84px;
  }
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
  .page-about .about-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-flow__node,
  .page-about .about-flow__bubble,
  .page-about .about-sect a {
    transition: none;
  }
  .page-about .about-flow__node:hover,
  .page-about .about-flow__node:focus-visible {
    transform: none;
  }
}